diff --git a/bin/dune b/bin/dune
index 78243f7..6f547dc 100644
--- a/bin/dune
+++ b/bin/dune
@@ -1,11 +1,11 @@
 (executable
- (public_name cert-service-server)
- (name cert_service_server)
- (modules cert_service_server)
+ (public_name hashbang-cert-server)
+ (name hashbang_cert_server)
+ (modules hashbang_cert_server)
  (libraries cert_service lwt.unix extunix bos mirage-crypto-rng.lwt))
 
 (executable
- (public_name cert-service-client)
- (name cert_service_client)
- (modules cert_service_client)
+ (public_name hashbang-cert-client)
+ (name hashbang_cert_client)
+ (modules hashbang_cert_client)
  (libraries cert_service lwt.unix bos mirage-crypto-rng.lwt))
diff --git a/bin/cert_service_client.ml b/bin/hashbang_cert_client.ml
similarity index 100%
rename from bin/cert_service_client.ml
rename to bin/hashbang_cert_client.ml
diff --git a/bin/cert_service_server.ml b/bin/hashbang_cert_server.ml
similarity index 100%
rename from bin/cert_service_server.ml
rename to bin/hashbang_cert_server.ml